// 24 栅格布局
$colSpanList: 4.16667%, 8.33333%, 12.5%, 16.66667%, 20.83333%, 25%, 29.16667%, 33.33333%,
              37.5%, 41.66667%, 45.83333%, 50%, 54.16667%, 58.33333%, 62.5%, 66.66667%,
              70.83333%, 75%, 79.16667%, 83.33333%, 87.5%, 91.66667%, 95.83333%, 100%;